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Note 12 - Accrued Closure Costs and ARO (Details Textual) - USD ($) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Asset Retirement Obligation, Revision of Estimate |  | $ 2,333,000 | $ (175,000) |
Asset Retirement Obligation, Liabilities Settled |  | 693,000 | 331,000 |
Asset Retirement Obligation |  | 7,315,000 | 5,301,000 | $ 5,508,000
Perma-Fix Northwest Richland, Inc [Member] |  |  |  |
Asset Retirement Obligation, Revision of Estimate |  | 707,000 | 175,000 |
Asset Retirement Obligation, Liabilities Settled |  | 410,000 | $ 331,000 |
M&EC [Member] |  |  |  |
Asset Retirement Obligation, Liabilities Settled |  | 283,000 |  |
Asset Retirement Obligation |  | 3,058,000 |  |
Asset Retirement Obligation, Current |  | $ 2,177,000 |  |
Net Property and Equipment [Member] |  |  |  |
Asset Retirement Obligation, Revision of Estimate | $ 1,626,000 |  |  |

X
- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Asset Retirement Obligation -URI http://asc.fasb.org/extlink&oid=6505190 + Details
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- Definition Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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